EP0882765B1 - Melt processable biodegradable compositions and articles made therefrom - Google Patents

Melt processable biodegradable compositions and articles made therefrom Download PDF

Info

Publication number
EP0882765B1
EP0882765B1 EP98114766A EP98114766A EP0882765B1 EP 0882765 B1 EP0882765 B1 EP 0882765B1 EP 98114766 A EP98114766 A EP 98114766A EP 98114766 A EP98114766 A EP 98114766A EP 0882765 B1 EP0882765 B1 EP 0882765B1
Authority
EP
European Patent Office
Prior art keywords
starch
composition
ethylene
acetate
plasticizer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98114766A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0882765A3 (en
EP0882765A2 (en
Inventor
Shmuel Dabi
Ram L. Kataria
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Johnson and Johnson Consumer Inc
Original Assignee
McNeil PPC Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by McNeil PPC Inc filed Critical McNeil PPC Inc
Publication of EP0882765A2 publication Critical patent/EP0882765A2/en
Publication of EP0882765A3 publication Critical patent/EP0882765A3/en
Application granted granted Critical
Publication of EP0882765B1 publication Critical patent/EP0882765B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
    • C08L3/02—Starch; Degradation products thereof, e.g. dextrin
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/01—Hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/06—Biodegradable
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L31/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid or of a haloformic acid; Compositions of derivatives of such polymers
    • C08L31/02—Homopolymers or copolymers of esters of monocarboxylic acids
    • C08L31/04—Homopolymers or copolymers of vinyl acetate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/04—Homopolymers or copolymers of esters
    • C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
    • C08L33/10—Homopolymers or copolymers of methacrylic acid esters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds

Definitions

  • This invention is related to the development and use of environmentally friendly materials that can alleviate the growing environmental problem of excessive trash.
  • This invention relates to the development of compositions that degrade rapidly by microorganisms. These compositions can be used in a variety of consumer disposable products. For example, the materials can be fabricated into films, fibers and molded parts for the manufacturing of disposable products such as diapers, sanitary napkins, adult incontinence products, and particularly tampon applicators.
  • starch as a low cost biodegradable filler in certain polymeric systems.
  • a fairly high concentration of starch filler is required to achieve biodegradation.
  • the mechanical properties of the compositions deteriorate sharply with increasing starch content.
  • the first breakthrough in making high starch content materials was the discovery that starch can be melt processed in the presence of water, heat, and pressure. See U.S. Patent Numbers 4,133,784 and 4,337,181 ("the USDA patents").
  • the USDA patents describe the use of starch filled poly(ethylene-acrylic acid) (EAA) and polyethylene (PE) as a biodegradable film for packaging and agricultural mulch. These patents describe a process where the starch is first gelatinized in the presence of water at elevated temperatures. Under such conditions the highly hydrogen bonded natural structure is destroyed and melt flow is attained. The resulting mixture is then blended with EAA and PE. Large amounts of water are used (20%-50%) and the final starch content is as high as 60 wt. %, after the water is removed.
  • EAA ethylene-acrylic acid
  • PE polyethylene
  • a starch based blown film is also described in an article by Felix Otey. Ind. Eng. Chem. Res. , 1987, 26 , 1659-1663.
  • U.S. Patent Number 3,949,145 describes a method to prepare polyvinyl alcohol films filled with starch for agricultural applications.
  • This composition is highly water sensitive, making the composition highly unsuitable for disposable products such as diapers and sanitary napkins. Also, polyvinyl alcohol-containing samples degrade very slowly under simulated anaerobic sewage treatment conditions making compositions formulated according to this patent unsuitable for disposable products.
  • Injection molded starch capsules are described in U.S. Patent Number 6,673,438. These capsules are made from pure starch in the presence of 5% to 30% water and heat. The structure of the strongly hydrogen bonded starch is believed to be-destroyed under these conditions, creating a melt flow. The resulting material is stiff and extremely water sensitive, which make the compositions a poor candidate for biodegradable products such as disposable diapers and sanitary napkins.
  • U.S. Patent Number 5,095,054 discloses polymer blends that can be transformed by heat and under pressure to form products having dimensional stability. These compositions comprise destructurized starch, and at least one substantially water insoluble polymer; the composition may optionally contain another water-insoluble polymer and a plasticizer.
  • the starch used in these compositions has a relatively high water content that significantly modifies the starch's dimensional and mechanical properties; although the destructurized starch is thermoplastic, it is not water resistant.
  • This starch composition is an unsuitable substrate for manufacturing disposable products such as tampon applicators, disposable diapers, and sanitary napkins.
  • U.S. Patent Number 5,087,650 discloses biodegradable plastic compositions comprising unmodified starch and thermoplastic polymers.
  • the starch too has a high water content that causes the starch to become destructurized when heated under pressure. This affects the starch's dimensional and mechanical properties and makes the compositions unsuitable for biodegradable thermoplastic compositions.
  • WO91/02023 to Butterfly S.R.L. discloses a biodegradable plastics material which is produced by the extrusion of a composition including starch, a polymer compatible with starch, in particular, an ethylene-acrylic acid co-polymer and/or ethylene-vinyl alcohol co-polymer and an expanding agent.
  • a composition including starch, a polymer compatible with starch, in particular, an ethylene-acrylic acid co-polymer and/or ethylene-vinyl alcohol co-polymer and an expanding agent.
  • WO91/02023 there is no unmodified starch present, and the starch that is introduced before the extrusion is substantially destructured. Tests have indicated that compositions prepared according to this document lacked the necessary biodegradation properties required to be suitable for consumer products.
  • GB 2,190,093 describes starch compositions that consist of at least 72 wt. % starch and, optionally, a second hydrophilic polymer. The presence of at least 10 wt. % water is also essential in that process which makes the compositions unsuitable for consumer products.
  • a molded tampon applicator from poly(3-hydroxybutyrate) and poly(3-hydroxyvalerate), a plasticizer, and a nucleating agent is described in U.S. Patent Number 4,900,299, assigned to McNeil. Also disclosed is the optional use of a biodegradable filler as hydroxyalkyl cellulose or starch.
  • starch filled polymers are the cheapest and most convenient route for producing functional biodegradable materials. But the starch content in such compositions must be very high (>50 wt. %) to achieve a reasonable rate of biodegradation. Further, starch powder typically contains 10% to 40% by weight moisture. This starch is generally charged into an extruder where the combination of heat and pressure is sufficient to destructurize and melt the starch. Because starch becomes the major phase, the resulting materials are brittle and require further modifications.
  • starch filler typically, a fairly high concentration of starch filler is required to achieve biodegradation.
  • conventional polymers such as polyethylene, polyurethane, etc. have a limited useful capacity for starch filler, that is, the mechanical properties of the compositions deteriorate sharply with increasing starch content. Further, microorganisms have been shown to selectively digest the starch without degrading the polymeric matrix.
  • compositions that contain destructurized starch, which is a water soluble material and has a very limited use in consumer products.
  • This starch is formed by exposing starch to heat and pressure in the presence of water, which breaks the hydrogen bonds between the starch molecules and renders the materials thermoplastic but soluble in cold water, and thus, unsuitable for consumer products. For this reason, other water insoluble polymers have been incorporated into such compositions, but this caused poor biodegradation.
  • the present invention provides compositions that maintain a proper balance between mechanical properties, high biodegradation rate, processability, and low cost.
  • compositions of the present invention are thermoplastic, exhibit good mechanical properties, and readily degrade in the presence of microorganisms.
  • the compositions of this invention can be injection molded into thin walled parts which are capable of appreciably degrading in the sewage system in thirty days. These products find utility in flushable disposable products.
  • compositions comprise
  • This invention further relates to articles prepared from the biodegradable compositions disclosed herein, in particular, disposable tampon applicators.
  • This invention provides classes of thermoplastic biodegradable compositions.
  • This invention relates to a class of degradable thermoplastic compositions comprising a premade starch-hydrophobic polymer alloy, blended with unmodified starch and a liquid plasticizer.
  • the starch-polymer alloy comprises about 50 to 80 wt. % destructurized starch and 20 to 50 wt. % of a water insoluble polymer.
  • destructurized starch has its conventional meaning, i.e., starch that has been formed by thermoplastic melt formation in the presence of water; this process disrupts the starch's hydrogen bonds, and, thus, the starch's crystalline structure.
  • the water insoluble polymer is selected from the group consisting of ethylene-vinyl acetate having a vinyl acetate molar content of from about 5 to 90 %, modified ethylene vinyl-acetate having from about 5 to 90 % of hydrolyzed acetate groups, ethylene-glycidil acrylate, ethylene-methyl methacrylate, ethylene-maleic anhydride, and mixtures thereof.
  • the polymer will be ethylene-vinyl acetate, preferably with a vinyl acetate content of about 12 to 80%.
  • the starch-polymer alloy further comprises a plasticizer selected from the group consisting of glycerine; polyethylene glycol; ethylene glycol; propylene glycol; sorbitol; mannitol; the acetate, ethoxylated and propoxylated derivatives of glycerine, polyethylene glycol, ethylene glycol, propylene glycol, sorbitol, mannitol; and mixtures thereof.
  • the plasticizer will be glycerine.
  • the plasticizer comprises between about 20 to 60 wt. % of the destructurized starch component present in the alloy.
  • the alloy further comprises 0 up to about 20 wt. % urea with respect to the weight of the destructurized starch component; that is, if the composition contains 60 grams of destructurized starch the composition will contain 12 grams of urea.
  • the content of the above-described premade starch-polymer alloy in the biodegradable composition is about 15 to 50 wt. %, preferably about 15 to 30 wt. %.
  • unmodified starch means starch that has not been melt processed, and, thus, its crystalline structure has not been disrupted.
  • the starch content has no more than about 2 wt. % water. In a more preferred embodiment, the starch has no more than about 0.1 wt. % water.
  • the particle size of the starch will be less than about 15 microns, preferably about 5 to 10 microns, and more preferably less than about 5 microns.
  • the unmodified starch content of the biodegradable composition is about 30 to 55 wt. %, preferably about 40 to 50 wt. %.
  • the total starch content of the biodegradable composition i.e., the destructurized plus the unmodified starch
  • the starch-polymer alloy is further blended with a water soluble plasticizer containing hydroxyl groups.
  • This plasticizer should have a molecular weight of less than about 1000.
  • the plasticizer may be glycerin, trimethylpropane, sorbitol, erythritol, or polyethylene glycol.
  • the plasticizer is glycerin.
  • Other suitable plasticizers will be apparent to those skilled in the art, and the use of other plasticizers will not depart from the spirit of the invention.
  • the amount of the plasticizer utilized is an amount effective to render the composition thermoplastic and to reduce the composition's sensitivity to water.
  • the plasticizer is present in an amount about 15 to 30 wt. % of the composition, preferably 20 to 30 wt. %.
  • inert additives such as calcium carbonate (CaCO 3 ) can be incorporated into the formulation.
  • the amount of additional inert filler is about 2 to 20 wt. %, more preferably about 5 to 10 wt. %.
  • thermoplastic compositions of this invention are useful for producing injection-molded, thin-walled articles which have the advantage of being biodegradable.
  • the compositions are particularly useful for preparing flushable, disposable products such as tampon applicators.
  • Shaped articles such as films, fibers, and molded parts can be made from the claimed compositions not only by injection molding processes but also by melt-processes such as melt-extrusion, and compression molding.
  • Mater-Bi® (AIO6H) was obtained from Novamont in 50kg sealed bags.
  • the pellets were mechanically mixed with the modifying powders (starch, calcium carbonate) and liquids (polyethylene glycol, Carbowax, glycerin) and fed into a twin screw Brabender mixer.
  • the barrel temperature was kept at 160°C to avoid thermal degradation of starch.
  • the strands were air cooled on a conveyor prior to entering the pelletizer.
  • the melt rheology of each composition was determined at various shear rates using a capillary rheometer from Keyaness (Honey Brook PA, model Galaxy IV #0052).
  • Bench scale digestion units were set up in one incubator. Each unit contained a mixture of freshly collected digested and raw sludges from a waste treatment facility. Previous acclimated sludge (seed) was also added at about 1.5% level. The anaerobic digesters were placed in an incubator at 35°C. Each test material (1 gram film, 10-20 mil thick) was wrapped in a nylon mesh containing glass weight to assure contact with bottom of the sludge. Weight loss and gas evolution was monitored for 30 days.
  • Glycerin and starch are highly compatible with Mater-Bi resin and their blends produced clear films. In the biodegradation tests, it appeared that the synthetic polymer portion of the Mater-Bi® did not degrade and this preserved the film integrity. The addition of glycerin and starch reduced the synthetic resin content in the composition and increased the degradation rate. In the unmodified starch alloys, around 55% weight loss was measured, which is also the nominal concentration of starch in Mater-Bi®. The modified resins, have shown weight losses of up to 88%.
  • the results also indicate that the presence of CaCO 3 has no effect on the biodegradation.
  • samples F and G with samples A - E it is evident that to achieve a higher rate of degradation, the continuous phase may be diluted with starch.
  • the starch compositions must meet certain melt flow requirements for producing injection molded parts with thin walls, such as a tampon applicator.
  • the rheology measurements also suggest that the starch has a strong interaction with Mater-Bi®. This was manifested in a very sharp increase in the melt viscosity. Such phenomenon was not observed with inert fillers, i.e., calcium carbonate.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Biological Depolymerization Polymers (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
EP98114766A 1993-01-15 1994-01-14 Melt processable biodegradable compositions and articles made therefrom Expired - Lifetime EP0882765B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US6013 1979-01-24
US08/006,013 US5910520A (en) 1993-01-15 1993-01-15 Melt processable biodegradable compositions and articles made therefrom
EP94100533A EP0606923B1 (en) 1993-01-15 1994-01-14 Method for the preparation of melt processable biodegradable compositions

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP94100533A Division EP0606923B1 (en) 1993-01-15 1994-01-14 Method for the preparation of melt processable biodegradable compositions

Publications (3)

Publication Number Publication Date
EP0882765A2 EP0882765A2 (en) 1998-12-09
EP0882765A3 EP0882765A3 (en) 1999-03-24
EP0882765B1 true EP0882765B1 (en) 2003-10-15

Family

ID=21718856

Family Applications (2)

Application Number Title Priority Date Filing Date
EP98114766A Expired - Lifetime EP0882765B1 (en) 1993-01-15 1994-01-14 Melt processable biodegradable compositions and articles made therefrom
EP94100533A Expired - Lifetime EP0606923B1 (en) 1993-01-15 1994-01-14 Method for the preparation of melt processable biodegradable compositions

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP94100533A Expired - Lifetime EP0606923B1 (en) 1993-01-15 1994-01-14 Method for the preparation of melt processable biodegradable compositions

Country Status (14)

Country Link
US (1) US5910520A (el)
EP (2) EP0882765B1 (el)
JP (1) JP3923094B2 (el)
AT (2) ATE252138T1 (el)
AU (2) AU669025B2 (el)
BR (1) BR9400106A (el)
CA (1) CA2113521C (el)
DE (2) DE69433252T2 (el)
DK (2) DK0882765T3 (el)
ES (2) ES2194851T3 (el)
GR (1) GR1002560B (el)
NZ (2) NZ250655A (el)
PT (2) PT882765E (el)
SG (1) SG54321A1 (el)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10313939A1 (de) * 2003-03-27 2004-10-14 Wacker Polymer Systems Gmbh & Co. Kg Verwendung von Polymerisaten zur Stärkemodifizierung

Families Citing this family (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5939467A (en) * 1992-06-26 1999-08-17 The Procter & Gamble Company Biodegradable polymeric compositions and products thereof
GR1002912B (el) * 1993-01-15 1998-05-25 Mcneil-Ppc Inc. Βιοδιασπωμενες συνθεσεις, επεξεργαζομενες σε κατασταση τηξης και αντικειμενα κατασκευαζομενα απ'αυτες.
SG49096A1 (en) * 1994-01-28 1998-05-18 Procter & Gamble Biodegradable 3-polyhydtoxybuyrate/3- polyhydroxyhexanoate copolymer films
ZA95627B (en) * 1994-01-28 1995-10-05 Procter & Gamble Biodegradable copolymers and plastic articles comprising biodegradable copolymers
ID23491A (id) * 1994-01-28 1995-09-07 Procter & Gamble Kopolimer-kopolimer yang dapat dibiodegradasi dan baha-bahan plastik yang terdiri dari kopolimer-kopolimer yang dapat dibiodegradasi
RU2144047C1 (ru) * 1994-01-28 2000-01-10 Дзе Проктер Энд Гэмбл Компани Биоразлагаемые сополимеры, пластмассовые и впитывающие изделия, содержащие биоразлагаемые сополимеры
AU741001B2 (en) * 1994-09-16 2001-11-22 Procter & Gamble Company, The Biodegradable polymeric compositions and products thereof
FR2735483B1 (fr) * 1995-06-13 1997-08-08 Potency Sarl Materiau composite totalement biodegradable et procede de fabrication de ce materiau
US6143947A (en) * 1996-01-29 2000-11-07 The Procter & Gamble Company Fibers, nonwoven fabrics and absorbent articles comprising a biodegradable polyhydroxyalkanoate comprising 3-hydroxybutyrate and 3-hydroxyhexanoate
WO1997034953A1 (en) * 1996-03-19 1997-09-25 The Procter & Gamble Company Biodegradable polymeric compositions and products thereof
US6019743A (en) 1997-06-30 2000-02-01 Mcneil-Ppc, Inc. Flexible applicator for inserting an article into a mammalin body cavity
AU1281499A (en) * 1997-10-31 1999-05-24 Monsanto Company Plasticized polyhydroxyalkanoate compositions and methods for their use in the production of shaped polymeric articles
ES2247724T3 (es) * 1997-10-31 2006-03-01 Metabolix, Inc. Mezclas de polimeros que contienen polihidroxialcanoatos con buena retencion de elongacion.
DE19758376A1 (de) 1997-12-24 1999-07-01 Johnson & Johnson Gmbh Tampon-Applikator
KR100503763B1 (ko) * 1998-01-23 2005-10-27 주식회사 새 한 생분해성 수지 조성물
DE19938672C2 (de) * 1999-08-06 2001-11-22 Biop Biopolymer Gmbh Verfahren zur Herstellung einer thermoplastischen Polymermischung auf Stärkebasis durch reaktive Extrusion
US6231970B1 (en) * 2000-01-11 2001-05-15 E. Khashoggi Industries, Llc Thermoplastic starch compositions incorporating a particulate filler component
US6450986B1 (en) * 2000-06-19 2002-09-17 Mcneil-Ppc, Inc. Tampon applicator having outwardly flared rim
US6423025B1 (en) 2000-06-30 2002-07-23 Herve Buzot Catamenial applicator having a fingergrip
US6582389B2 (en) 2000-12-20 2003-06-24 Mcneil-Ppc, Inc. Applicator for delivering bulky devices
DE10065058A1 (de) * 2000-12-27 2002-07-11 Sasol Germany Gmbh Alkoxylierte Alkohole als Weichmacher für Polyvinylacetat-Kuststoffe
US6773422B2 (en) 2001-03-22 2004-08-10 Mcneil-Ppc, Inc. Folded compact tampon applicator
US6673032B2 (en) 2001-03-30 2004-01-06 Mcneil-Ppc, Inc. Applicator having improved gripper end
CN1164661C (zh) * 2001-12-17 2004-09-01 武汉华丽环保科技有限公司 一种淀粉基生物全降解材料及其制备方法
WO2003066733A1 (fr) * 2002-02-05 2003-08-14 Mitsui Chemicals, Inc. Composition de resine biodegradable et objet moule a base de cette composition
US7098292B2 (en) 2003-05-08 2006-08-29 The Procter & Gamble Company Molded or extruded articles comprising polyhydroxyalkanoate copolymer and an environmentally degradable thermoplastic polymer
US6706942B1 (en) * 2003-05-08 2004-03-16 The Procter & Gamble Company Molded or extruded articles comprising polyhydroxyalkanoate copolymer compositions having short annealing cycle times
JP4622259B2 (ja) * 2004-02-17 2011-02-02 東ソー株式会社 樹脂組成物
KR20070084032A (ko) * 2004-10-05 2007-08-24 플랜틱 테크놀로지스 리미티드 성형가능한 생분해성 폴리머
US20080262407A1 (en) * 2005-03-31 2008-10-23 Chase David J Lubricated Tampon Applicator
EP1877020A1 (en) * 2005-03-31 2008-01-16 Johnson and Johnson Consumer Companies, Inc. Novel tampon applicator
JP2006316172A (ja) * 2005-05-12 2006-11-24 Toyota Motor Corp 樹脂組成物
US7989524B2 (en) * 2005-07-19 2011-08-02 The United States Of America, As Represented By The Secretary Of Agriculture Fiber-reinforced starch-based compositions and methods of manufacture and use
BRPI0600681A (pt) * 2006-02-24 2007-11-20 Phb Ind Sa blenda polimérica ambientalmente degradável e seu processo de obtenção
BRPI0600683A (pt) * 2006-02-24 2007-11-20 Phb Ind Sa composição polimérica ambientalmente degradável e seu processo de obtenção
US8308675B2 (en) * 2006-03-31 2012-11-13 Mcneil-Ppc, Inc. Applicator device
US20100209726A1 (en) * 2007-10-26 2010-08-19 Kelly Coover Biodegradable material and methods related thereto
US20090218729A1 (en) * 2008-02-29 2009-09-03 Pelley Kenneth A Method and apparatus to form a spherical end of an elongated cylindrical tube
US8029456B2 (en) 2008-03-31 2011-10-04 Mcneil-Ppc, Inc. Compact intravaginal device applicator
DE102008027261A1 (de) * 2008-06-06 2009-12-10 Martin-Luther-Universität Halle-Wittenberg Verfahren zur Verbesserung der physikalisch-chemischen Eigenschaften bioabbaubarer Werkstoffe
WO2012162092A1 (en) * 2011-05-20 2012-11-29 The Procter & Gamble Company Molded articles of starch-polymer-wax-oil compositions
EP2847270B1 (en) 2012-05-07 2018-03-21 Aktec Development Limited Biodegradable plastics, method for production thereof and use thereof
DE202012103789U1 (de) 2012-07-09 2012-11-15 Galmedics Biotech Ltd. Fangtrichterartige Menstruationssammelvorrichtung
US9644082B2 (en) * 2012-10-15 2017-05-09 Kaneka Corporation Polyester resin composition and molded article containing this resin composition
US9339580B2 (en) 2013-11-27 2016-05-17 Kimberly-Clark Worldwide, Inc. Flushable tampon applicator
US9456931B2 (en) 2013-11-27 2016-10-04 Kimberly-Clark Worldwide, Inc. Thermoplastic and water-dispersible injection moldable materials and articles
US9320656B2 (en) 2013-11-27 2016-04-26 Kimberly-Clark Worldwide, Inc. Water-dispersible thermoplastic injection molded composition
US11278456B2 (en) 2020-07-21 2022-03-22 Lacey Janell Lund Tampon insertion device
CN117836366A (zh) * 2021-09-30 2024-04-05 日本瑞翁株式会社 氯乙烯树脂组合物、氯乙烯树脂成型体以及层叠体

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0327109A (ja) * 1989-06-24 1991-02-05 Hagiwara Kogyo Kk 生物分解性フラットヤーンの製造方法
US5087650A (en) * 1990-12-05 1992-02-11 Fully Compounded Plastics, Inc. Biodegradable plastics

Family Cites Families (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0052460B1 (en) * 1980-11-18 1985-02-06 Imperial Chemical Industries Plc Polymer blends
EP0057415B1 (en) * 1981-01-30 1987-04-29 Teijin Limited Polyester resin composition
DE3238232A1 (de) * 1981-04-18 1984-04-19 Eberhard Faber Gmbh, 8430 Neumarkt Lufttrocknende modellier- oder formmasse
GB2124637A (en) * 1982-08-03 1984-02-22 Bip Chemicals Ltd Polyethylene terephthalate moulding compositions
US4673438A (en) * 1984-02-13 1987-06-16 Warner-Lambert Company Polymer composition for injection molding
JPS634653A (ja) * 1986-06-25 1988-01-09 Hitachi Ltd 配線基板及びその製造方法
GB2208651B (en) * 1987-08-18 1991-05-08 Warner Lambert Co Shaped articles made from pre-processed starch
GB2214516B (en) * 1988-01-25 1992-10-07 Warner Lambert Co Method of producing destructurised starch
GB2214918B (en) * 1988-02-03 1992-10-07 Warner Lambert Co Polymeric materials made from starch and at least one synthetic thermoplastic polymeric material
US4938763B1 (en) * 1988-10-03 1995-07-04 Atrix Lab Inc Biodegradable in-situ forming implants and method of producing the same
US5035930A (en) * 1988-12-30 1991-07-30 National Starch And Chemical Investment Holding Corporation Biodegradable shaped products and the method of preparation thereof
IL93620A0 (en) * 1989-03-09 1990-12-23 Butterfly Srl Biodegradable articles based on starch and process for producing them
IT1234783B (it) * 1989-05-30 1992-05-27 Butterfly Srl Procedimento per la produzione di composizioni a base di amido destrutturato e composizioni cosi ottenute
IT1233599B (it) * 1989-05-30 1992-04-06 Butterfly Srl Composizioni polimeriche per la produzione di articoli di materiale plastico biodegradabile e procedimenti per la loro preparazione
IL94587A (en) * 1989-06-19 1997-04-15 Novon International Polymer base blend compositions containing destructurized starch
IL94589A0 (en) * 1989-06-22 1991-04-15 Warner Lambert Co Polymer base blend compositions containing destructurized starch
IL94588A0 (en) * 1989-06-22 1991-04-15 Warner Lambert Co Polymer base blend compositions containing destructurized starch
YU128990A (sh) * 1989-07-11 1993-05-28 Warner-Lambert Co. Preparati polimernih smeša koji sadrže destrukturisani skrob
PL286051A1 (en) * 1989-07-20 1991-03-11 Warner Lambert Co Polymer mixture, method for manufacturing a thermoplastic product and a method for manufacturing a thermoplastic alloy
IT1232894B (it) * 1989-08-03 1992-03-05 Butterfly Srl Articoli espansi di materiale plastico biodegradabile e procedimento per la loro preparazione
IT1232910B (it) * 1989-08-07 1992-03-05 Butterfly Srl Composizioni polimeriche per la produzione di articoli di materiale plastico biodegradabile e procedimenti per la loro preparazione
IT1232909B (it) * 1989-08-07 1992-03-05 Butterfly Srl Composizione polimerica per la produzione di articoli di materiale plastico biodegradabile comprendente amido destrutturato e copolimero di etilene
JPH0623260B2 (ja) * 1989-11-08 1994-03-30 工業技術院長 微生物崩壊性熱可塑性樹脂成形物及びその製造方法
JPH0662839B2 (ja) * 1989-11-14 1994-08-17 工業技術院長 微生物分解性プラスチック成形物及びその製造方法
US5206087A (en) * 1990-02-28 1993-04-27 Director-General Of Agency Of Industrial Science And Technology Biodecomposable or biodisintegrable moldable material
IT1240503B (it) * 1990-07-25 1993-12-17 Butterfly Srl Miscela polimerica amidacea particolarmente per la produzione di film e simili e procedimento per la sua produzione.
GB9016345D0 (en) * 1990-07-25 1990-09-12 Ici Plc Polymer blends
IT1245408B (it) * 1991-02-20 1994-09-20 Butterfly Srl Composizioni polimeriche biodegradabili a base di amido e di polimero termoplastico
EP0539541B1 (en) * 1991-05-03 1997-07-09 NOVAMONT S.p.A. Biodegradable polymeric compositions based on starch and thermoplastic polymers
DE4116404A1 (de) * 1991-05-18 1992-11-19 Tomka Ivan Polymermischung fuer die herstellung von folien
EP0595859B1 (en) * 1991-06-26 1997-01-22 The Procter & Gamble Company Disposable absorbent articles with biodegradable backsheets
US5217803A (en) * 1991-06-26 1993-06-08 Tredegar Industries, Inc. Disposable absorbent articles with biodegradable backsheets
US5169889A (en) * 1992-01-27 1992-12-08 National Starch And Chemical Investment Holding Corporation Poly hydroxybutyrate/hydroxyvalerate based hot melt adhesive

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0327109A (ja) * 1989-06-24 1991-02-05 Hagiwara Kogyo Kk 生物分解性フラットヤーンの製造方法
US5087650A (en) * 1990-12-05 1992-02-11 Fully Compounded Plastics, Inc. Biodegradable plastics

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 199112, Derwent World Patents Index; Class A17, AN 1991-082832, "Preparation of biodegradable flat yarn" *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10313939A1 (de) * 2003-03-27 2004-10-14 Wacker Polymer Systems Gmbh & Co. Kg Verwendung von Polymerisaten zur Stärkemodifizierung

Also Published As

Publication number Publication date
BR9400106A (pt) 1994-08-02
SG54321A1 (en) 1998-11-16
DE69433252D1 (de) 2003-11-20
DK0882765T3 (da) 2003-12-01
AU669025B2 (en) 1996-05-23
US5910520A (en) 1999-06-08
ATE252138T1 (de) 2003-11-15
JPH06322182A (ja) 1994-11-22
EP0606923A3 (en) 1996-06-05
EP0882765A3 (en) 1999-03-24
EP0606923A2 (en) 1994-07-20
DE69432378D1 (de) 2003-05-08
EP0882765A2 (en) 1998-12-09
PT882765E (pt) 2004-02-27
CA2113521C (en) 2006-08-29
NZ270251A (en) 1995-12-21
NZ250655A (en) 1995-12-21
GR1002560B (el) 1997-01-29
ATE236220T1 (de) 2003-04-15
DE69433252T2 (de) 2004-09-16
ES2194851T3 (es) 2003-12-01
EP0606923B1 (en) 2003-04-02
DE69432378T2 (de) 2004-02-12
ES2209012T3 (es) 2004-06-16
CA2113521A1 (en) 1994-07-16
AU5305494A (en) 1994-07-21
PT606923E (pt) 2003-07-31
AU5086496A (en) 1996-07-04
DK0606923T3 (da) 2003-07-21
JP3923094B2 (ja) 2007-05-30
AU688673B2 (en) 1998-03-12

Similar Documents

Publication Publication Date Title
EP0882765B1 (en) Melt processable biodegradable compositions and articles made therefrom
CA2149139C (en) Biodegradable compositions comprising starch
KR101477049B1 (ko) 생분해성 플라스틱의 제조에 유용한 생분해성 중합체 조성물 및 그러한 조성물을 제조하는 방법
AU723458B2 (en) Biodegradable polyester and natural polymer compositions and films therefrom
US6184261B1 (en) Water-resistant degradable foam and method of making the same
CN112940474B (zh) 一种抗菌耐刺破可生物降解包装袋及其制备方法
EP0540641B1 (en) Biodegradable polymer blend containing 3-hydroxybutyrate/3-hydroxyvalerate copolymer
CN101580642A (zh) 一种全生物降解天然高分子合金及其制备方法
CN101928411A (zh) 淀粉基可生物降解组合物及其制备方法和应用
EP3162841B2 (en) A biodegradable biocompostable biodigestible plastic
US20050176856A1 (en) Disasemble resin and the manufacturing method for thereof
US9925707B2 (en) Process for preparation of biodegradable biocompostable biodigestible polyolefins
JP2000015765A (ja) 生分解性多層フィルム・シート
KR100385718B1 (ko) 전분을함유한생분해성수지조성물및그제조방법
KR0156895B1 (ko) 생분해성 수지 조성물
AU2015249059B2 (en) A process for preparation of biodegradable biocompostable biodigestible peplene polymer
CA2910848C (en) A process for preparation of biodegradable biocompostable biodigestible peplene polymer
KR0135211B1 (ko) 분해성 수지 조성물
KR0146849B1 (ko) 생분해성 수지 조성물
WO1997031979A1 (en) Biodegradable polyester compositions with natural polymers and articles thereof
KR100458292B1 (ko) 생분해성 수지 조성물
JP2002069206A (ja) 脂肪族ポリエステル系樹脂組成物
BR102015031336A2 (pt) A process for the preparation of people polymer biodigerible biocompostable biodegradable
JPH0532823A (ja) 崩壊性樹脂組成物
NZ239123A (en) Biodegradeable polymer blend comprising a copolymer containing 3-hydroxy

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AC Divisional application: reference to earlier application

Ref document number: 606923

Country of ref document: EP

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FR GB IE IT LI LU MC NL PT SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FR GB IE IT LI LU MC NL PT SE

17P Request for examination filed

Effective date: 19990831

17Q First examination report despatched

Effective date: 20010417

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AC Divisional application: reference to earlier application

Ref document number: 0606923

Country of ref document: EP

Kind code of ref document: P

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB IE IT LI LU MC NL PT SE

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 69433252

Country of ref document: DE

Date of ref document: 20031120

Kind code of ref document: P

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: E. BLUM & CO. PATENTANWAELTE

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2209012

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20040716

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: MC

Payment date: 20061212

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20070103

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20070104

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IE

Payment date: 20070111

Year of fee payment: 14

Ref country code: AT

Payment date: 20070111

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20070112

Year of fee payment: 14

Ref country code: PT

Payment date: 20070112

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 20070115

Year of fee payment: 14

Ref country code: CH

Payment date: 20070115

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20070220

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20070322

Year of fee payment: 14

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: MCNEIL-PPC, INC.

Free format text: MCNEIL-PPC, INC.#GRANDVIEW ROAD#SKILLMAN, NJ 08558-9418 (US) -TRANSFER TO- MCNEIL-PPC, INC.#GRANDVIEW ROAD#SKILLMAN, NJ 08558-9418 (US)

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20070608

Year of fee payment: 14

REG Reference to a national code

Ref country code: PT

Ref legal event code: MM4A

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 20080714

BERE Be: lapsed

Owner name: *MCNEIL-PPC INC.

Effective date: 20080131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080131

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

EUG Se: european patent has lapsed
NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20080801

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080714

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080801

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080131

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080114

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080115

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080114

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080131

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20080115

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080115

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080114

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20100208

Year of fee payment: 17

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080114

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20100113

Year of fee payment: 17

Ref country code: DE

Payment date: 20100107

Year of fee payment: 17

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20110114

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20110930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110114

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69433252

Country of ref document: DE

Effective date: 20110802

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110802